PACKARD ON A NEW CAVE FAUNA IN UTAH. 169 



The occurrence of this species in caves so remote is interesting. iSTo 

 Dijytera, I am informed by Baron Osten Sacken, are peculiar to caves, 

 though this species is common in most of our caves, especially near 

 the entrance, and has not been found elsewhere. Associated with the 

 beetle were three larvfe, which I am inclined, with some doubt, to re- 

 gard as the young of Diclidia Icvtula LeConte. It seems to agree with 

 the family characters of the larvfe of the Mordellidw, as laid down by 

 Chapais and Candeze ; but, of course, until some one rears it, the identi- 

 fication will be uncertain. I give meanwhile a brief description of it. 



In general form it is like the larva of Anaspis, the body being rather 

 long and narrow, the head nearly as wide as the prothoracic segment, 

 the body a little wider than the head, thickest in the middle, and grad- 

 ually tapering toward the end ; head as long as broad, subtrapezoidal, 

 somewhat square, the sides not very convex, the surface depressed, 

 with a few scattered hairs. Antennae as long as from the base of the 

 head to their insertion ; 4-jointed ; 2d joint a little wider and one-third 

 as long as the 3d joint; the 4th joint as long as the 3d is thick, ending 

 in three or four hairs. Mandibles acute, not very long. Maxillary 

 palpi one-third as long as the entire maxilla, being small and short, ap- 

 pressed to the head; 3-jointed, the joints subequal; 2d joint short, the 

 3d nearly twice as long as the 2d. Labium small ; palpi feeble, short, 

 and small; 2-jointed, the joints subequal. No eyes can be detected. 

 Prothoracic segments well rounded in front, nearly as long as broad ; 

 2d abdominal segment not much longer than the 3d ; the terminal seg- 

 ment narrows rapidly behind, ending in a pair of upcurved spines, which 

 are rather long and slender, acute, tipped with brown, with the ana 

 propleg rather large. Legs rather long and slender ; tarsi ending in a 

 single claw. Color whitish ; head and prothoracic segment slightly 

 tinged with honey-yellow. Length, 5"^™. Three specimens, apparently 

 not fully grown, as they were small in comparison with the beetle. 

 They were found on boards forming the steps in the entrance of the 

 cave, in perpetual darkness, however, and had evidently been artificially 

 introduced. 



This genus belongs to an interesting family, as the larvae of Metoccus, 

 Bhipi])1iorus, Symhius, and Horia, live in wasps' nests, and Ehipidius 

 is a parasite on Blatta germanica. The young of Mordella and Anaspis, 

 however, burrow in the stems of herbaceous plants, while the larvae of 

 Mordella fasciata, Fabr. in Europe lives in the "dead wood of the poplar". 



